Line lock and margin release



Nov. 22, 1927.

J. H. BARR LINE LOCK AND MARGIN RELEASE Filed Jan.a, 192e lsheets-smet 1 INVENTOR JOHN BAR/. y

Bf/Wvmf ATTORNEYS 2 Sheets-Sheet 2 Nov. 22, 1927.

J. H. BARR LINE LOCK AND MARGIN RELEASE Filed Jan. 8. 1926 Patented Nov. 22, 1927,

, 1,650,180 PATENT OFFICE.

CORPORATION E NEW YORK? A LINE" Loox- Aivi) .MARGIN RELEASE.

. Application ledi January This invention relates to typewriting mechanism and p articularlyto line lock vandmargin release features. thereof.

Ain object of the invention is' to provide any improved typewriting mechanism by which operation of the printing` mechanism willu be obstructed 'whenfthe carriage reaches` a selected pointin it-s travel, such as at'the desiredend ofa line being typed, and by which the obstruction to thev keys may be removed bya. simple' manual operation of the typist when necessary in order to complete a syllable or-word; andwith which the point in .the travel at which operation of the print-- rling. mechanism is Vobst-ructed'fmay be varied at will. Y

A' further. obyect is to generally'improve.

and simplify suchy improvedmechanism fora'ccomplishing:these purposes, and'obtain a construction'which will be more compact, dependable, durable, convenient, and relatively inexpensive.

A further object is to provide an improved mechanism for' accomplishing each andl all` ofthe above objects lwhich may be largely formed of stamped flatsh'eet metal and vwirerods.V Y A further object is to provide an improved stop element, cam element, or margin stop, whichV maybe largely formed of stamped sheet metal and assembled inA a simple manner, and be relatively ldurable and inexpensive. Y

Various other objectsfand` advantages will be .apparentfrom the folloivingdescription of one embodiment of the invention, and the novel .featuresf will lbe particularly pointed out hereinafter inconnection with the appended claims. A

1n the accompanyingl drawings Fig. 1 is a diagrammatic elevationv of.a

portion of a typewriting machine con.

structed in accordance. with this invention;

Fig. 2 is a rear elevation of 21.-,segment and universal bar which are utilized as a partof the invention;

Fig.. 3 is a plan of part vof the bottom poi'- tion of the typewriter frame, and illustratingpart of the mechanism constituting the invention g Fig. i is an elevation of the margin release key and the-manner of its support 5 and Fig. 5 is a. rear elevation of a portion of the stop bar and oneof the improved cam or stop; element-s thereon.

s, i926. serial No. 79,913.A

In the illustrated embodiment of. the invention, the carriage 1 (see Fig. 1) is sup-` ported in any suitable or desired manner for travel across the frame 2 of theV machine. Such support for the-carriage may comprise a guide bar or traclr', havin'gfball'raceways l along its two edgesv forreceiving and 1guid ball bearings 5 which vrare interposed between the raceways and guide flanges 6 of: thecar'riage. The machine is also provided with any suitable printing mechanism 7 such as type bars vpivoted, to the segment 8 and operating upon a universal bar 9;

' One vform of such universal bar is shown in Figs. 1 and 2 and includes an arcuate bar disposed in a groove10' inthe rear'face of the segment 8, lso asv to be ei'igagedy andy camnied rearwardly by the heels ofthe type bai-s as the type bars movetoward'printing position. Thearcuatebar is .supportedby angularly positioned ylevers 11 ,which are lpivcted at 12 and 13 to supporting .ears14'and `15 ofthe segment. Thelevers 11 are pivotally connected at one end vto spaced pointsV of the arcuate bar inY the groove-1Q, and/are interconnected atitheir other ends inpairs by a rocking joint. Forexample, va pin 16.` carried byione of each pairof'levers rock ingly engages in anaperture in the adjacent end of the other lever ofthe same pair.

To this universal bar 9, a linkx 17 isv con-iv Byy this mechanical interconnection of difnected, such as by a pivot pin 18, .the link extending rearwardly of the segment and having at its free end la slot 19 elongated in. a direction lengthwisethereof. vA screw, pin or bolt 20 is provided upon a bracket 2.1 of the frame 2. to slidingly support the free end of the link 17. To accomplish this purpose, the shank of the pin or bolt 2OV passes through the slotv19 and slidingly confines the link 17 to the bracket 21. Thus the linlr- 17 will have a movement of substantial trans# lation in a direction endwise of itself, whenever the universal b'ar.9y is operated by the heel of one of the type bars oi' the printing, mechanism.

A locking pawl 22 is pivoted at 23 to a bracket 24 ot the frame 2, so as to be inevable into a position at the end of the link i7 as shown in dash lines in Fin'. l. l.When the pawl is in the dash position shown in Fi g. l, it will lie closely adjacent the end of the link 17 and prevent endwise movei'nent thereof, and the latter, through its connection to the universal bar, will prevent or obstruct operation ot the type bars of the printing mechanism. TWhen the pawl 22 is in its lower position shown in'iull lilies in Fig. l, it will clear the link 17 and permit of a tree operationy ot the latter.

A lever 25 is pivoted to the bottom of the frame 2 in any suitable manner, such as by bearing clips 26 (see particularly Fig. 3) which fit over the lever and rotatably confine it to the frame. rlhe lever is preferably provided with an intermediate otlset or trans* verse portion whichV connects the two arms ot the lever, and the clips 2G are disposed over the transverse section adjacent the ends thereof, so as to not onlyV confine the .lever to the trame butv also prevent its lateral displacement One arm 27 ot the lever 25 extends into proximity to the pawl 22 and has an angular end 23 which passes through a slot 22a in the pawl, so that when the lever is rocked it will` cause a rocking ot the pawl 22 into and out of a position in which it obstructs operation ot .the printing mechanism. The other arm 29 ot the lever 25 extends into proximity to the carriage 'for operation by parts carried thereon, as will be explained snortly,

The arms 27 and 29 ot the lever are in ditferent planes, that is, each arm and the transverse section of the lever are in a plane which is oblique or inclined tothe plane ot the other arm ot the lever and the offset or transverse beaming` portion thereof, so that the lever may have a limited rocking motion upon the bottom 4`plate et the frame against which it is contined by the bearing clips 26, A spring 25a may act upon the arm 27 to urge it downwardly and yieldingly hold arm 29 in its upper position.

A margin or stop rack bar 30 is suspended by arms 3l, connected to its ends, trom the Vcarriage l, the arms 31 having eyes or loops 32 which are supported upon a shatt or pins 33 of the carriage. rllhe arms 31 and rack bar 30 together are in the shape of a bail which is dependingly hung from the carriage so as to move endwise of itseltl with the carriage, and at the same time be free to swingforwardly and rearwardly ot the machine. that is, in a direction laterally of .its travel with the carriage for a purpose which will hereinafter appear.

A clip 34 of sheet metal is slidingly mounted upon the rack bar 30, and may comprise a body of sheet metal which is itted Vagainst one 'tace of the rack bar, with its edges 35 turned over the edges of the rack bar and for a short distance across, but slightly spaced from, the other tace oi the rack bar. The clip is provided with notches 36 in its upper and lower edges, which. in effect, are apen tures in the edges 35.

A latch piece 37 has an arm 38 (see Figs. l

and extending through the two apertures 36 of the clip and along the tace ot the rack bar 30 over which the edges 35 are turned, but between saidV edges and that face ot the rack bar, so as to be confined against the rack bar and yet be free to move transversely ot the rack bar across a tace thereof. y.The upper end of the latch piece 37 extends over the upper edge of the rack bar, then over and down in front ot the other face ot the rack bar but in spaced relation thereto, and at its other end terminates in a reduced pin section 39. 'v Y The lower end of the arm 33 of the latch nece, which is confined between the edges 35 and one tace of the rackbar 30, has lateral flanges 4() which are turned or bent transversely to the rack bar so as to cross the lower edge ot the rack bar in which raclf:v

teeth Vor notches 41 are provided. Thus, as the lat-ch piece moves vertically, that is, across a face of and transversely ot' the rack bar, the flanges 40 which underlie the raclr bar will move into or out of the notches 4l in the edge of the raclr bar. Then the Hannes 40 are in the notches 4l lthe latch piece will lock the clip against sliding movement along the rack bar, and when the latch piece is depressed the flanges 40 will be carried out et the notches in the rack bar and release the clip for sliding movement alongthe rack bar to new adjusted'positions. Y

A cam lever 42 is provided with a lateral or angular branch 43 which is pivoted by rivet 44r to the clip 34, so that the body ot thelever will depend somewhat below the clip. The free end oit the lever is provided with an upstandingi,` or lateral branch 45, the extreme tree end 46 of which is flanged toward and abr-.ts the adjacent tace of the rack bar. @ne end ot the clip is provided with a notch or slot 47 in which the angular end or flange 46 of the lever 42 is received, which limits the oscillating' or rocking movements of the lever 42.`

The cam lever 42 intermediate ot' its ends is also provided with a flange or ear l48 having' an aperture 49 therein, through which the reduced end 39 ot the latch piece eX- tends. r)The aperture 49 is somewhat larger than the reduced end 39 of the latch piece which extends therein, so that the cam lever may rock to the extent permitted by the limits of the slot 47 without binding` upon the end 39 of the latch piece. A helical compression spring- 50 surroundsthe reduced as aty 52.

monouso Y end 39foffthe latch piecerandis confined* undercompressionbetweenaV shoulderfoffthe:L latch@ piece 'andfthe flange-48 of 2the lever 42;

so" as Vto *have the --dublUhinetion oft 'yielde- 'ingly holding the 'cam leverin'its lowermost when the carriage hasf reaelied 1 av selectedy positi on depending lupoiii the position lol: the-' clip -uponthe rack-i bar: i The` lever 4Q /is pro--v `vided', upon its forward edgevhich engagesl th'elever armv 29,` with cam*-surtzcefolv which serves'as arnoseto CamA the lever arm- 29rr downwardlyl Whilel the#carriage moves by increments under' the dont-rolE the esoapementasy permitted" by theaprintng mechanismz- The other'end-orn they lever 42, which is further from :the pivot I'44; may be oblique; The"cam"lever 42 may also have a. pinY 53 projectingfrom a ace'thereof for` operating an audible signal devicebin any'v suitable manner `which,persen forms no part ofvthe present invention and Ivvhiohi, for 1 that reason, is notilliistrated.V

AS crankfjrod 54 seeFig; is pivotall'yl mounted- 'in-braelets -55 and Y-'carried Vby the bot-tom partof the frame.' Th'erod 54ertends substantially parallell to 'the rack bar and'in proximity thereto. 'Onejend or thecranlzA rod 54,3 adjacent the portion which is" rotatably mounted-Tin 1tliclbraolety` is turned"singularly` as alg-'50v to-form' a forank arm-'or cam 'arm of l"sucha length `Vas -to engage With the rack bar'BO andfswingfit rearwardly When the crank rodl-"isoscillated vin -th'e braolets "and I56* inf onefdir'ection.

A spring 575s conneotedfto the arm and to a suitable"anchorage pin'loflthe frame, so as toY normally hold 4the armJ fiir retract'-A ed*y positionV away froln they rack bar 3O.` 'lh'earm 5G may be'plaoed 'atfapproximately the center of the machine;v so? that through-r out'allofthe travel'i'othe carriage; itw'vill'r alivaysbe Vin proximity Vto and capable 01"' engaging the rack bar fOavhen' oscillated 'for that purpose.V Thev other endfofffthecrank rod 54 is turned angularly'fv as atQ'to form a second crank' arm, andthe extreme end or'this arm isturned angularly 'asat' 60 toy form a crank' pin. f

A push rodfGl isslightlymounted Vat-fone end in an aperture 62 or Aa Comb v63 of the' frame` and at an interi'nedi'ate*point ie loosely` and sliidably mounted hand guided in'an paper# ture 64'in `a rib of the frame; The other end' portion 'ofthe'puslr rod'l drops downwardly into*proximityA to lthe bottom of'thle Vframe, then toward th'ebraolrbar E30,Y

terminating Ajust frWai-'dly of the-'latterv in an upstan'ding.; arm -`67 .'whichly turns overland' rearwardly yto 'foi-m2 loop` 6811s thetermina-llAr fori the puehfy rod, which? pivotallykj receivesthe crankpin "'of the cranl;arm259'.i

Alieyvstein 70rofia1lmargin release keyjf'l isl connected'tofonefsidef of afoollfar 7'2 .xvhficli is--lized uponthe rod-161 'at az-point adjaeent the comb '63, and-this stem 70 also is prof-f vided with a' pin 73 which is:y slidably mounted in the comb 63. Thus Whenthef ley 71(Fig. 4) ispushed'Irearwardly, itWil-l` shift the rod Gl'rearwardly until larm 67-isin'ftliev dash lineA positiong- (Figi l)` ,and'by reasonfof its lpliwvoted'connection to thefc-ranlgi pinl60,'- Wi'll frook thecrank rod 54 thi'ouglil` an angularE eXten'tz Whielr Willi? carry the' crank armv 56" into engagement! with the1 rack:bar-301,` as :shownin dash; lines 111'1F1g.

l5 and swing it *rearwardlyn until'thef cam' f lever '42 clears th'e-fleverfarm 29gV Thelextra.- pii'if 737' preventssrotationffof'therod 6i abouti its-own axiswhich might tendit@ disenlgageiV its looped end 68 from the crank'piir 60 ori to allcwv` the turning offthekeyll from Vthe desired@ positionv in thef key board; The alight vertical lmovementof l'the/ push irod *6ll caused by-K the ",sli'ghtf vertical movement l' off ting slots 64T vertically'.

' In the operation' ofa typewriter:constructl ed Vin accordancewith thisy invention',A the operator may swing jtlie rackv bai-1 30 rear# Ward-ly-'and upW-ardly sofas tol be more `acy(fessi-bl@L andtheiolip' 34 is-th'en" adjusted alongthel'raok bar 30 to a'f position lwh'ere'r the end'olthe marginlor line istoHbe' de-l terminedfor stopped'.v Thebars-thenfre' leased and falls into thepositi'onesliownf:ini fullQ-ilines` in -Fi`gf l. v Irl' shifting the` clip along the* rackY ball; iti is merely neces'slaryi tolepressg thev lat-chv piece 37 against` theL action offthe spring'vO; sulli'eiently to-fd-ie` engage thef'flanges 40 fromthefnotehesl/ll; which'vr releases' the clip for sliding movement. lVhen the clip'v llas b'eerifrepositilonedj the flanges 4() fwillfreturn! into the notches 41 -as soon -as -the latclr piece; v37L`is released;E owing rto `vchef/action ofthe spring() lWhich normally urges -the latehc piece upW-ardlyj.-`

During theoperation off the printing mechanism, l as iinftyping aline; the typeI harsv carried by; the Vsegment Williop'erate the vuni-- versal lbar 9i and Ithe link loonneetedl tol the latterfwill befgiven amot-ion of 'endwise translatiem;y The leverQis normally inf the angular positionI shownl in Fig.l l, and holds thel looking pawl V22" out? l of "the path rol' the link? 17.7 The other end v.QQ'VOA-i'thle lever inth'e fulllfline posi-tion shoufnfin-'Fig l andv within the pathfof the cam 4lever 'e2 of `the- Clip asr it travels' with the oarriagethrough" increments of motion permitted by the eseap'ement mechanism xvliiehf Iis :also operatr ed at eachV operation off'the-typebarsy VVh'en' the desired "end othe-lifnefhas @been the other arm 27 of the same lever Vwill be Cil elevated, and will shi'litthe locking pawl 22 into the path ot' vthe link 17 so as to prevent translation thereof. yllhis locks the universal bar against movement, and the latter prevents movement ot the type bars oli the printing mechanism into .printing positions. This serves as an indication to the operator that the end of the line has been reached, which determines the right margin ofthe matter being typed upon a page.

Preferably a bell or similar signal device is operated vby the pin 53 just prior to the locking ot the printing mechanism, which serves as an audible advance signal to the operator that the end of the line has been about reached.

It frequently happens that when the line lock thus described has become eiiective, a syllable or word is incomplete and could be completed by the printing oi one or more letters. To permit this, the operator pushes the key 71 rearwardly and this shifts the rod 6l rearwardly, thus rocking the crank arm 56 against the rack bar 30 and rocking the latter rearwardly sufficiently to carry the cam lever l2 off the end of the lever arm 29. immediately that this happens, the lever arm 29 will move upwardly into its normal position and the locking pawl 22 will descend into its inactive position, releasing the printing mechanism.

Vhen the key 71 is released, the spring 57 will retract the arm .56 ,from the rack bar 8O and permit the latterV to swing into its normal position shown in Fig. l. In so swinging the tace oi the cam lever l2 will strike against the end of the lever arm'29 so that the carriage may continue its travel without again depressing the lever arm 29 and locking the printing mechanism. In this manner.y a limited amount of further typing may be accomplished.

The cam lever, during its movement with the carriage in either direction after release from the lever 29, will ride against the end ot the same until it clears it, and then the rack bar will return entirely to the normal position shown in full lines in Fig. l. Il the lever l2 is moved entirely beyond the arm 29 in a further printing operation, and the carriage is then returned, the end portion F2 oi the lever l2 will engage the lever 29 and cam it downwardly against the action ofthe spring 25a and temporarily lock the printing mechanism, although no harm comes therefrom since one would not be likely to operate the printing mechanism while the carriage is traveling toward its initial or starting; position, rlhe vslot 47 limits the movement of thelever l2 so that it will normally be held in proper position l,

tov engage and depress the lever `arm 29at the end of a line. Y

It will be observed that with this construction, one may readily determine the end of a line or margin by properly positioning the clip S4 upon the rack bar 30, The printing mechanism will be automatically locked when the carriage reaches a selected` point in its travel and this locking mechanism may be released to permit ot a limited further operation of the printing mechanism by merely pressing upon l the key 7l. Such mechanism is relatively simple and formed largely ot stock material, such as sheet metal, wire rods, springs, etc., and may be arranged in the usual typewriter without necessitating material rearrangements yor changes in the other typewriter mechanism.

lt will be observed that with this improved construction the locking oi the printing mechanism by the margin stop does not int riere with the travel oi the carriage. lt is only the type` bars and the key lever system which are locked against further movement and the carriage may be operated further in letter feeding direction by the spaceV bar or by releasing the carriage through the usual carriage release mechanisirIn not shown. ,Y

it will be obvious that variousfchanges in the details, which have been herein described and illustrated for the purpose of explaining the nature of the invention, may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims.

l claim Y l l. In a typewriting machine, a frame, Va carrige movable across the frame, printing mechanism, a universal bar operable by the printing mechanism, a link connected at one end to said universal bar, Ya support for slidingly mounting the other end of said link, a stop movable into and out of the path of said link, and means controlled by the carriage i'or shifting said stop into the path ot said link to prevent operation of Athe universal bar and thereby Aoi" thek printing mechanism when the carriage has reached predetermined point in its travel. i

2. ln a typewriting machine, ay frame, a carriage movable across the frame, printing mechanism, a universal bar operable by the printing mechanism, a link connected at one end to said universal bar, a support for slidingly mounting the other end ot said link, a stop movable into and out of the path ot saidlink, means controlled by the carriage for shitting said stop into the path of said link to prevent operation ofthe universal bar and thereby olf the printing mechanism when thecarrige has reached a carrige movable .across the frame, a stop bar hinged to said lcarriage for' normal movement therewith and capable of [swinging laterally of the direction oit travel' of theA ca 1riage,.a margin stop'carried byvsaid bar, printing mechanism, means operated by Asaid margin stop to obstruct operation of thel printing mechanism at a selected point in the travel of the carriage While permitting the carriage to travel and mechanism VforV swing the stop bar laterally oi" the travel ot the carriage to disengage it :trom said means to permit further.v operation of the printing mechanism.

ll. in a typeivriting machine, a frame, a carriage movable across the frame, a stop bar carried by the carriage for travel there- With, and hingedly connected thereto so as to `swing laterally of the direction ci the travel of the carriage, printing mechanism, a margin stop carried by said bar, means carried by lsaid trame and Yaclaitcd when operated to prevent operation oi said printingvmechanism but permit continued movement or" thev carriage, said means including an perating member in the normalpath or travel of Vsaid stop, so as to be operated thereby to check operation of the printing` mechanism When the carriage has reached a selected point in its travel, and means-carried by saidstame and operable laterally against said bar to swing it out. of the path of said member torelease lthe printing mechanism. l

In a typeiviitingmachine,'a frame, a carriage movable across the frame, a stop bar carried by the carriage for travel therewith and hingedly connected thereto so as to swing laterally el the direction of the travel of the carriage, printing mechanism, a margin stop carried by said bar, means carried by said ranieand adapted when loperated to prevent operation ot' 'said printing mechanism, said means including 'an operating.memberl in the normal path ol travel of said stop, so as to be operated thereby to check operation oi the printing mechanism'ivhen,the carriage has reached a selected point in its travel,an arm pivoted to saidv 'trame and sliittable transversely ol said bar at any point in the travel of the carriage to. engage and swing; it out 'of engagement With the operating` member of said means, to effect a release ot the printing mechanism, and means for rocking'said arm to rtiect a release oie said printing mechanism. e

6. In a. typewriting machine, a segment, printing mechanism carried by said segment, a universal bar carried by said segment, a

link pivoted at one end to said universal bar,lmeans supporting lthe other end or" said link so'that operat-ionoi said universal bar Will cause translation of said link in an end- Wise direction, a pivoted pavvl niovable across the path of travelo'f 4said link to prevent such translation,and means controlled by the carriage for shiftingl said paWl into a position to prevent operation of said link VWhen the carriage has reached a selectedv point in its trave 7. In a typewriting machine, a segment,

printing mechanism carried by said segment,

a `universal bar carried by said segment, a link lpivotedl atone end to said 'universal bar, meanssiipporting the other end o'I said link so that operation of said universal bar Will cause translation of said link inv an end- Wise direction, a *pivoted paivl movable across the path of travel of said link to prevent such translation, a'lever pivoted-to Ysaid frame and operable upon said stop pavvl to shift it into the path of ytravel otsaid link, and means carried by the carriage Vfor operating said lever "automatically When the carriage reaches a selected point in its travel, whereby at suoli-selected point further' operation of the printing mechanism Will be prevented. Y 'K 8. In a typewriting machine, a segment, printing mechanism carried by said segment, a universalbar carried by said segment,aJ link pivoted at one end of said universal bar, meanssupporting the other end of said link so that operation of said universal bar will cause translation of the link in an endWise direction, a pivoted paWl movable across the path of travel of said link to prevent such translation, a lever pivoted to said frame and operable upon said stop paWl to shift it into the path, of' travel 'of said link, means carried by the carriage 'for operating said lever automatically when the carriage reaches a 'selected point in its travel, Whereby'at such selected pointffurther operation ofthe printing mechanism Will bev prevented, and mechanism fordisengaging said means from said lever. Y y

l9. Ina typewriting machine, airame', a carriage'movable across the frame, a Astop device carried'by said 'carriage fory travel therewith and movable thereon laterally of the direction of travel of said carriage, print ing mechanism, means movable into a rposition to obstruct operation of said printing mechanismsaid means having an operating member in the path of travel of said stop device for displacement by the stop device as the latterv passes, whereby during the interval While the stop device is passing aV selected point in its travel with the carriage,

said meanswill cause an obstruction to the device laterally of the direction of travel ot the carriage to release said operating member and permit further operation ot the printing mechanism.

10. In a typewriting machine, a trame, a carriage movable across the frame', a bailshaped bar hinged to said carriage so as to swing inv a direction forwardly and rearwardly, printing mechanism, means for obstructing operation of said printing mechanism including an operating member adjacent said bar, an element carried by said bar and operating on said member to set it to obstruct operation of said printing mechanism during the interval in which said element is passing a selected point in its travel with the carriage, and means for engaging and swinging said bar out of engagement with said operating member to release the printing mechanism for :further operation.

l1. In a typewriting machine, a Jframe, a carriage movable across the trame, a stop bar carried by said carriage and hinged thereto for movement laterally of the direction of travel of said carriage, a margin stop element carried by said bar, a lever having an operating end terminating in proximity to and in the path ot travel of said margin stop element to be rocked thereby, whereby while the stop element is passing a selected point in its travel with the carriage, it will engage and depress and hold depressed the end of said lever, printing mechanism, means operable by said lever when depressed for obstructing operation of said printing mechanism without interference with the travel of the carriage, and a device Jfor swinging said bar laterally of its travel with the carriage to disengage it from said lever and release the printing mechanism for turther operation.

12. In a typewriting machine, a trame, a carriage movable across the trame, a stop bar carried by said carriage and movable thereon laterally of the direction ot travel of said carriage, a stop element carried by said bar, said element having a cam lange extending in a plane parallel to the direction of travel of said bar, a lever having an operating end extending in a direction transversely of the travel ot' the carriage and terminating in proximity to and in the path of said lange, whereby when the stop element on said carriage passes a selected point in its travel the flange will engage said end of the lever and rocked, printing mechanism, means operable by said lever when so rocked for obstructing operation of said printing mechanism, and a device for shifting said bar laterally to'disengage it from the end of the lever andthereby release the printing mechanism for further operation, said bar when released moving toward normal position until said flange lies across the end ot the lever and being held in that position until the carriage has traveled further to an extent suliicient to release the flange from the lever;

13. In a typewriting machine, a trame, a carriage moving across the frame, printing mechanism, means tor obstructing operation of said y printing mechanism including a lever having a :tree operating end in proximity to the carriage, and cam means provided on said carriage to engagel and rock said lever and hold it in a position to obstruct op-eration of the printing mechanism while the carriage is passing a selected point in its travel.

14. In a typewriting machine, a frame, a carriage moving across the frame, printing mechanism, means for obstructing operation of said printing mechanism including a lever having a tree operating end in proximity to the carriage and extending in a direction transversely to its direction of travel,cam means provided on said carriage to engage and rock said lever when the carriage reaches a selected point in its travel, said'cam means being movable laterally of its travel away from the end of said lever and laterallyr against the end portion of said lever, and a device for shifting said cam means laterally ot its travel to release said lever and thereby release said printing mechanism, said cam means when released being held in released position by its engagement with the end portion of the lever until the carriage travels to an extent suflicient to carry the vcam means entirely out of engagement with the lever.

15. In a typewriting machine,a trame, a carriage movable across the trame, printing mechanism, means Jfor obstructingthe operation of said printing mechanism including a lever having an operating arm extending into proximity to said carriage and extending in a directionA transversely of the direction ot travel of said carriage, cam means supported by said carriage and movable therewith and disposed to engage and operate said lever arm at a selected point in the travel of the carriage, said cam means being movable laterally ot its path ot travel out of engagement with the lever, a crank member having anarm engageable with said cam means to shift it out ot engagement with said lever, a spring normally holding said crank member in inactive position, and a key device connected to said crank member for operating the same to effect a shitting of the cam means and thereby effect a release ot the lever. Y

1G. In a typewriting machine, a trame, a carriage movable across th-e trame, a stop bar extending parallel to and carried by said carriage and supported for movement laterally of the direction ot travel ot' the carriage, printing mechanism, means movable into a Yposition to obstruct operation oli' said printing mechanism and including a lever having an operating end in proximity to said stop iet lll)

bar, the stop bar' having a cam portion engagingwitli and operatingsaid lever when the carriage reaches a-selected point in its travel, a rod extending in a direction lengthwise of thetravel of the carriage and-having two crankarms thereon, one of said crank arms movable into engagement with said stop bar to shift itlaterally out of engagement with said lever and thereby release said printing mechanism for further operation, a push rod connected to the other crank arm for rocking said rod, means normally holding said rod in aposition with its top bar operating arm in inactive position, and a key device connectedv to said push rod to operate the same.

17. In a typewiiting machine, a frame, Aa carriage operable across the traine, printing mechanism, means for obstructing operation of said printing mechanism automatically when the carriage reaches aselected point in its travel, a push rod slidingly supported by said frame, a key device connected to one end portion oi said rod for operating thesanie in an endwise direction, the end oflsaid rod being bent laterallyand then backwardly-to 'form a loop, a crank device having an arm kengaging insaid loop so aslto be rocked :thereby when the rod is shifted endwise, said crank device having Aa member operable to release said print-ing mechanism when shifted by said key, and means for normally retracting said crank device into inactive position.

18. ln a typewriting machine, a frame, a carriage movable across the frame, a segment, printing mechanism' carried b said segment, a universal bar carried by said segment-in a position to be operated by said printing mechanism, a link connected at one end to said universal bar for movement therewith, said link being also supported by v-said frame for movement in a .substantially endwise direction when operated by said universal bar, a stop element mounted onsaid frame and movable into a position to Vprevent operation of said link byv said universal bar,

- alever mounted on said frame and connected to said element to operate the same when the lever is rocked, and means provided on the carriage for rocking said lever in `a direc- Ation to shift-said element into a position where it locks movement of said universal bar whenever the carriage reaches a selected point in its travel.

19. In a typewriting machine, a frame, a-

carriage movable across the frame, a segment, printing 'mechanism cairied by said segment, a universal bar carried by said segment in aposition to be-operated by said printing mechanism, a link connected at one end` to said universal bar ior movement therewith, said link being also supported by said frame formovement in a substantially endwise direction when operated by said univerSal'bar, a stop member mounted on said 'trainey and` inov able zagainst thefendzof-l said linka to prevent its operation by said universal bari,l a t .lever mounte'd by said frame, and connected at one end to said. inein-ber'to operate the same when the'leverf--isifrocked, and '70 means provided onfthe carriage for: rocking said; lever. ima "direction tovshiitfy the member int-01a position where it lockszmoveinent lof said 1 universal bar ,whenever the carriage reaches Ia selectedipoint in its-travelfaind means for disengagingi the 1 leve r operating nieansfromf thefleveitto release the 'universal bar. ,l

20. `In atypewritingimachine, a frame, la carriage movable acrossthe frame, `asto, `bar carried byptlie carriage and having racli teeth ,therealong, a clipl embracing ,and slidable along saidzban'facain leveirpivoted at one end to vsaid clip :and extendingparallel with`- said bar,- saidf 'clip-hav-ing avertically extending-slot therein, said lever'having-a tongue extending therefrom in-saidslotio limit the oscillatoryl movement of ysaid lever. A.21.. In atypewriting machine,-a iframe, a carriage movable across the'franie, a. stop bar carried -by the carriage Zand, having rack v.teeth therealong,Vv a` clip embracing. :and slid- ;able along said bar,a camvleveipivoted at vone endto said clip and.extendingpparallel with` said bar, said clip i havin-g a vertically extendingA slot therein, -sa-id lever having ya tongue extending therefromAin-to e said `slot to limit 'the` oscillatory movement of Asaid llover, and -a spring deviceV carried .by said clip and engaging .with `said. leveri to yield- .1' `ingly hold it at one limit oi its oscillatory movement.v

22. In aA typewriting`| machine, a iframe, Va carriage ,movableacrosszt-he frame, Ya stop .bar` carried i by. the carriage and; having rack teeth therealong, a clip embracing .and slidable .along-said harp-.a cam,l.ever pivotedy at one end to said .clip -afnd extending parallel 4with sa-idfbarVsaidcclip having ,avvertcally Vextending yslot therein, lsaid lever having a 1110 tongue extending therefrom into. said slot to limit the oscillatory movementof said lever, a latch element carried by-said clip for move- -mentin a. directioniedgewise Vof said bar, `said latch extending' along Aone liace ofthe;

bar landhaving a.. tongue extending therefrom .along theV edge of the `rack teeth, wherebyv when the. latch element is-shitted in said c lip,-the tongue will move into and out or' engagementjwith the i,ackteetli. to lock the clip against slidingmovement along the bar, and` a` spring orryieldingly urging the latch device in a direction to engage said tongue with said rack teeth.

23. In a typewriting machine, .a frame, r a carriage-movable across. the frame, a'stop -bar carriedfby the carriage and having 'back teeth1therealong,a clip embracing and` slid- *able'alongsaidbana cam lever pivotedat l:one en d to said clipand fextendingparallel 1130 with' said bar, said clip having a vertically extending slot therein, said lever having a tongue extending therefrom into said slot to limit the oscillatory movement of said lever, a latch element carried by said clip for movement in a direction edgewise of said bar, said latch extending along one Vface of the bar and having a tongue extending therefrom along the edge of the rack teeth, whereby when the latch element is shifted in said clip, the tongue will move into and out of engagement with the rack teeth to lock the clip against sliding movement along the bar, and a spring interposed between the latch device and the lever for yieldingly urging said latch device in a direction to engage its tongue with the rack teeth and urge said lever int-o one of its limited positions.

24. In a typewriting machine, a carriage,

a rack'bar supported by said carriage for movement therewith, a clip litt-ing against one face of the bar and having itsfedges turned over and slidingly engaging both edges of said bar, whereby the clip may slide along said bar and be confined thereon, said clip having apertures in its upper and lower edges, a latch piece passing through said apertures and across one face of the bar from edge to edge, said latch piece having at one end a tongue engaging with the teeth ,of said rack bar and movable out of engagement with said teeth when the latch piece is moved endwise, and a spring acting upon said latch piece to normally shift it in a direction to engage its tongue with the rack teeth.Y

25. In a typewriting machine, a carriage, a rack bar supported by said carriage for movement therewith, a clip iitting against one face of the bar and having its edges turned over and slidinfrly engaging both edges of said bar, whereby the clip may be confined upon and slide along said bar, said clip having apertures in its upper and lower edges, a latch piece passing through said apertures and across one face of the bar from edge to edge, said latch piece having at one end a tongue engaging with the teeth of said rack bar and movable out of engagement with said teeth, when the latch piece is moved endwise of itself, the end of said latch piece opposite from the tongue extending over the latch bar and down the other face of the bar, a lever hinged at one end to said clip, said lever and clip having interengaging portions limiting the oscillatory movement of the lever thereon, said lever having a flange provided with an aperture,

the last named portion of the latch piece being` reduced in lateral dimensions and eX- tending through the aperture in the flange of said lever, and a spring surrounding the reduced portion of the latch piece, abutting at one end against said flange of the lever, and at its other end against the larger portion of said latch piece, so as to normally urge the latch piece in a direction to engage its tongue with the rack teeth of the bar and also Vurge said lever in one direction.

26. in a typewriting machine, a segment, printing mechanism carried by said segment, a universal bar operated by theA printing mechanism, a lin r pivoted at one end to said universal bar, means support-ing the other end of said link so that operation of said universal bar will cause translation of said link in an endwise direct-ion, a pivoted pawl movable across the path of travel of vsaid link to pre'cnt such translation, and means controlled by the carriage for shifting said pawl into a position to prevent operation of said link when the carriage has reached a selected point in its travel.

2T. in a typewriting machine, a segment, printing mechanism carried by said segment, a universal bar operated by the printing mechanism, a link pivoted at one end to said universal bar, means supporting the other end of said link so that operation of said universal bar will cause translation of said link in an er Ivise direction, a pivoted pawl movacross the path of travel of said link to cnt such translation, a lever pivoted to said ir ie and operable upon said stop pawl te shii't it into the path of travel of said link, and inc-ans carried by the 'carriage forfoperating said lever automatically when the carare reaches a selected point in its travel,

egeby at such selected point further operation of the printing mechanism will be prevented.

in a typewriting machine, a segment, printing mechanism carried by said segment, a universal bar operated by the printing mechanism, a link pivoted at one end Vto said universal bar, means supporting the other Ti' i end of said link so that operation of saiduniversal bar will cause translation of the link in an endwise direction, a `pivoted pawl movable lross the path of travel of said linl`r to prevent'such translation, a lever pivoted to said frame and operable.V upon said step pawl to shift it into the pat-h of travel of said link, means carried by the carriage for operating said lever automatically when the ycarrif/ige reaches a selected point in its travel, whereby at such selected point further operation of the printing mechanism will be prevented, and mechanism for disengaging said means from said lever.

29. in a typewriting machine, a carriage, printing mechanism, a stop element movable with said carriage, and means including aV member in the path of and operable 'by said stop element, as the latter passing a se 'ciel point in its travelwith the carriage, obstructing operation of the printing mec-ha without interference with the travel of the carriage, said stop clement being at will independently movable on the Vcarriage to release saidmember and permit continued operation of the printing mechanism.

30. In a typewriting machinei a carriage, a plurality of printing devices, means including a control member mounted for approximately rectilinear movement and operable by an y one of said devices, a stop device in! cluding' a. member movabie into and out of a position in which it obstructs rectilinear movement of said control member, a stop element movable with said carriage, and

`operable automatically upon said stop device to cause movement of said obstructing ymember into obstructing position While the stop element is moving` With sai-d carriage past a selected point in its travel, said stop` In Witness whereof, I hereunto subscribe 20 my signature.

JOHN H. BARR. 

